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  • ZnSe-Positive-Meniscus-Lens

Zinc Selenide (ZnSe)
Positive Meniscus Lenses

Meniscus lenses anonyanya kushandiswa kutarisa kune diki diki saizi kana collimation application. Ivo vanopa kuita kwakanyanya kwepamusoro nekudzikisa zvakanyanya spherical aberrations. Positive meniscus (convex-concave) lenses, iyo ine convex surface uye concave surface uye yakakora nepakati kupfuura kumacheto & inokonzeresa kuti marasha emwenje isanganise, akagadzirirwa kuderedza kutenderera kwe spherical mu optical system. Kana yashandiswa kutarisisa danda rakakomberedzwa, divi rakakomberedzwa relenzi rinofanira kutarisana nekwakabva kudzikisa kutenderera kwedenderedzwa. Kana ikashandiswa pamwe chete neimwe lenzi, yakanaka meniscus lens inopfupisa kureba kwekutarisa uye kuwedzera nhamba yekuvhura (NA) yehurongwa pasina kuunza yakakosha spherical aberration. Sezvo yakanaka meniscus lens ine radius yakakura yekumisikidza padivi re concave re lens pane kudivi re convex, mifananidzo chaiyo inogona kuumbwa.

ZnSe lenzi dzakanyanya kukodzera kushandiswa nepamusoro-simba CO2 lasers. Nekuda kweiyo yakakwira refractive index yeZnSe, tinogona kupa spherical yakanakisa fomu dhizaini yeZnSe, inova yakanaka meniscus dhizaini. Aya malenzi anokonzeresa kutsauka kudiki, saizi yemavara, uye zvikanganiso zvewavefront zvinofananidzwa neakanakisa fomu lenzi akagadzirwa nezvimwe zvinhu.

Paralight Optics inopa Zinc Selenide (ZnSe) Positive Meniscus Lenses inowanika nebroadband AR coating yakagadziridzwa ye8 µm kusvika 12 μm spectral renji yakaiswa panzvimbo mbiri. Uku kupfekedza kunoderedza zvakanyanya kutarisisa kwepamusoro kweiyo substrate, ichipa avhareji yekufambisa inopfuura 97% pamusoro peiyo AR coating renji.

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Features:

Material:

Zinc Selenide (ZnSe)

Coating Option:

Asina kuvharwa kana neAntireflection Coatings ye8 - 12 μm

Focal Lengths:

Inowanikwa kubva ku15 kusvika ku200 mm

Application:

Kuwedzera iyo NA yeOptical System

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Zvakajairwa Zvinodiwa:

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Reference Drawing ye

Positive Meniscus Lens

f: Kureba kwakatarisana
fb: Back Focal Length
R: Radius yeCurvature
tc: Kukora Kwepakati
te: Mupendero Hukobvu
H”: Kudzokera Principal Ndege

Ongorora: Iyo yakatarisa kureba inotarwa kubva kumashure hombe ndege, iyo isingaite mutsara nekukora kwemupendero.

 

Parameters

Ranges & Tolerances

  • Substrate Material

    Laser-Giredhi Zinc Selenide (ZnSe)

  • Type

    Positive Meniscus Lens

  • Index of Refraction (nd)

    2.403

  • Abbe Number (Vd)

    Hazvina kutsanangurwa

  • Thermal Expansion Coefficient (CTE)

    7.1 x 10-6/℃

  • Diameter Tolerance

    Precison: +0.00/-0.10mm | High Precision: +0.00/-0.02mm

  • Pakati Makobvu Kushivirira

    Precison: +/-0.10 mm | High Precision: +/-0.02 mm

  • Focal Length Tolerance

    +/- 1%

  • Hunhu hwepamusoro (Scratch-Dig)

    Precison: 60-40 | Kunyatsojeka: 40-20

  • Spherical Surface Power

    3 λ/4

  • Surface Irregularity (Peak to Valley)

    λ/4

  • Center

    Precison:< 3 arcmin | High Precision:<30 arcsec

  • Clear Aperture

    80% yeDyamita

  • AR Coating Range

    8 - 12 μm

  • Reflectance over Coating Range (@ 0° AOI)

    Ravg<1.0%, Rabs<2.0%

  • Kufambisa pamusoro peCoating Range (@ 0° AOI)

    Tavg > 97%, Tabs > 92%

  • Dhizaini Wavelength

    10.6 μm

  • Laser Damage Threshold (Yakaputswa)

    5 J/cm2(100 ns, 1 Hz, @10.6μm)

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Magirafu

♦ Transmission curve ye10 mm gobvu, isina kuvharwa ZnSe substrate: high transmission kubva 0.16 µm kusvika 16 μm
♦ Transmission curve ye5 mm gobvu AR-coated ZnSe lens: Tavg > 97%, Tabs > 92% pamusoro pe8 µm - 12 μm renji, kutapurirana munzvimbo dziri kunze kwebhendi kuri kuchinjika kana kuterereka.

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Transmission Curve ye5mm Gobvu AR-yakavharwa (8 - 12 μm) ZnSe lenzi pa0° AOI

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